dennis kneale has that story. dennis: last time nbc tried to make jay leno retire, the multimillion dollar's debacle. and it didn't take. now nbc will try it again. the hollywood reporter says they may announce the fall tv season will be his last making room for jimmy fallon to fill the chair. if that is news to jay leno himself, brace yourself for a year of awkward moments. three years ago nbc tried to ease him out and it erupted into public spitting match. he moves to 10:00, failed in a big way, conan o'brien walked away with millions in made money and a new life on tbs. leno took back the tonight show. nbc promised:conan o'brien he would take over. now they may be promise in the job to jimmy fallon only a year or so early. but jay leno's contract expires next year and nbc can't afford to lose jimmy fallon. he is the youngest host, now 38. in fact the succession would set up a battle of the jimmy's.]aç jimmy kimmel wil luring fans unr 30. this lead falls to 10% among adults under 50, and jimmy kimmel is more vi